Bluegrass Solid D3O Knee Pads Built For Hard Lines The Bluegrass Solid D3O knee pads are enhanced with D3O shells and extra soft pads at the sides to enhance protection and comfort. Built for the hardest lines we used breathable and durable fabrics such as Air Mesh and Kevlar for the construction. Features D3O(R) Technology Protectors compliant with EN 1621-1 Level 1Side soft pads Extended sleeve Silicone grippers Top and bottom straps Zip closure Strong durable Kevlar fabric Breathable Air Mesh fabric MFG#: 3PROP24S018 | Bluegrass | Solid D3O Knee Pads Men's | Size Small In Black